Question

Żółw= 4m na minute

Leniwiec= 3cm na sekunde

Oblicz, w jakim czasie:

Żółw pokona trasę: 20metrów, 30 metrów, 1 metr, 0,1 km

Leniwiec: 12cm, 60 cm, 15metrów, 0,3 kilometra

Answer 1

żółw:

20:4=5min

30:4=7.5min

1:4=1/4min

0.1=100m   100:4=25min

 

leniwiec:

12:3=4s

60:3=20s

15m=1500cm   1500:3=500s

0.3km=300m=30000cm    30000:3=10000s

Answer 2

Żółw: 

(Robię to na proporcje)

 

4m - 1min

20m - x

x=(20m*1min) / 4m = 5 min

 

x=(30m*1min) / 4m = 7,5 min

 

x=(1m*1min) / 4m = 0,25 min

 

0,1km = 100m

x=(100m*1min) / 4m = 25 min

 

Leniwiec:

3 cm - 1 s

12 cm - x

x=(12cm*1s) / 3 cm = 4s

 

x=(60cm*1s) / 3 cm = 20s

 

15m = 1500cm

x=(1500cm*1s) / 3 cm = 500s

 

0,3km = 30000cm

x=(30000cm*1s) / 3 cm = 10000s